Abstract

BALLESTEROS-MONTIEL, B.J.; ARREGUIN-SANCHEZ, M.L.; FERNANDEZ-NAVA, R.  and  QUIROZ-GARCIA, D.L.. Morphogenic description of the development of the prothalus and the young sporophyte from Pteris quadriaurita retz. (pteridaceae-polypodiidae) in three natural substrates. Polibotánica [online]. 2019, n.48, pp.65-86.  Epub June 15, 2020. ISSN 1405-2768.  https://doi.org/10.18387/polibotanica.48.6.

The development of the prothalus and the young sporophyte of Pteris quadriaurita Retz. are described. Studied material was collected in a cloud forest in Tototla, Xochicoatlán municipality, State of Hidalgo, México. The spores were sown in glass vessel of 125 ml prepared in the following manner: the glasses were layered with ceramic, river stone, mosquito net and three natural substrates (plant litter, maquique and moss) all previously sterilized and enclosed in plastic bag tied with copper wire. The cycle proved to be isosporeus with prothallial development corresponding to the Ceratopteris type. The gametophytes were only male, only female and few hermaphrodites. Young sporophytes were apogamous obtained around 231 days after sowing in moss and maquique, in plant litter, they were nor development.

Keywords : apogamy; gametophytes; sporophytes; natural substrates; Pteris.

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